Steam-boiler.



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0090.00@ QQQQQQQ. @@@OGOQ/ @@@EQQW @@@Dl @@@wwG @QQ PATBNTED MAY 10, 1904.

FIE'J- A. G. HOHENSTEIN. STEAM BOILER.

APPLIUATION Hmm JUNE 1.1903.

N0 MODEL.

YINTOR 1HE Noms paens co. 4cm-umn, wAsnmmcm, u. r.

TNESSES No. 759,522. PATBNTED MAY l0, 1904. A. G. HO'HBNSTEIN.

STEAM BOILER.

APPLIUATION FILED JUNI: 1. 1903.

N0 MODEL. 3 SHEETS-SHEET 2.

FISE- WITNESSES 2 l J/ S mvgm'on 4% 7 6 WL 6% No.l 759,522. PATBNTBD MAY 10,1904.

` A. G. HOHENSTBIN.

STEAM BUILER.

APPLIUATION FILED JUNE 1. 1903. No MODEL. a SHEETS-SHEET `a.

FIGB- lg' En WITH ESSES UNITED STATES Y:Patented Mey 1o, 1904.

PATENT OFFICE.

STEAM-Soulan.

SPECIFICATION forming part et' Lettere Patent No. 759,522, dated May Io, 1904.

Application iled June l, 1903. Serial No. 159,687. (No model.)

To all 'Lu/'tom it panty cancer/t.-

Be it known that I, AnoIIIE GERRY Ho IIIGN- l vapplication Serial No. 159,684, iiled June 1,

1.903, `Vand is especially adapted ior use in launches or small vessels. f

r1`he invention is hereinafter more :t'ully described and claimed.

1n the accompanying' drawings, forming a part of this specilication, Figure 1 is a lront elevation of my improved boiler, a portion of the front casing being' removed. Fig. 2 is a view of the rear end, partly in elevation and partly in section; and Fig. 3 is a sectional elevation transverse of the boiler.

1n the practice of my `invention the headers 1 have their lower ends connected to an equalizing-box 39, which is supported at its end by water-legs 40, which also serve as a supply oit' feed-water to the equaliZing-box, the feed-water pipe48 being' connected, asindicated in Fig. 1, to these supporting-legs. The front ends of three series of tubes 5, 7, and 8 are connected to the headers 1, which lare divided into two chambers by the partition 4 or into two series ot' sing'le headers, as described and shown in ai'iplicatiou Serial No. 159,684, tiled June 1, 1908. The tubes of series 5 have their rear ends connected to junction-boxes 6, from which extend also the other two series of tubes 7 and 8, as described in the application referred to. The carrying capacity of the tubesY 5 is .made equal to or approximately equal to the combined capacities of the two series of tubes 7 and 8. To the upper portions 'of the headers are connected tubes 43, their rear ends being closed, and within these tubes are arranged balileplates 44, whose front ends extend transverse of the headers, while their rear ends stop short oit' the closed ends of these steam-tubes, so that the circulation through these tubes will be along Athe under side of one tube toward their rear ends, back toward the I'ront end over the bailleeplates to the headers. Within the headers and below the baflle-plates 44 are formed baille-plates 45, they being so constructed and arranged as to practically insulate the tubes of the series7 and 8 from the tubes of series 5. As shown, these baffleplates 45 extend vertically from the point between the junction of the upper one of the series of tubes 5 with the header and the point of junction of the lower one of the tubes7 and 8 with the header.

ln this construction the circulation will be from the equalizingbox 39 to the headers, through the tubes of series 5 to the junctionboxes 6, through the tubes of series 7 and 8 to the headers, over the upper end of the bailleplate 45, and down along' the outer walls of the headers to the tubes ot' series 5. By reason of the several traverses of the steam through the tubes 48 a thorough separation ot' the steam from the water and drying oit' the steam is etfected. The upper ends ot' the headers are connected by elbows 46 with a steam-pipe 47.

lt will be understood that positions of the series of tubes 5, 7, and 8 may be reversed" f/I. e., the series of tubes 7 and 8 may be connected to the lower portions ol the headers and the series of tubes 5 to the upper portions oi" the headers, as shown and described in application Serial No. 159,684, `liled June 1, 1903.

fIt is characteristic ol this construction of boiler that the loop circulation is maintained, the headers 1, having' the vertical diaphragm arranged as stated, serving as an uptake and downtake.

As stated in the application Serial No. 159,686, the equalizing-box 'forms an arch for the tops of the furnace-doors.

lit is characteristic ot' this boiler that one of the series of tubes extend from whatis practically one water-chambcr and the other series of tubes from anotherchamber, the two chambers being connected so that there will be an uninterrupted flow of water .from one to the other. This separation of the two currents of water in the headers by the battle-plate or diaphragm is preferred, but not absolutely es- IOO sential, as two opposite currents can be established in a body of water, as is well known to those skilled in the art. This construction of boiler has also a characteristic found in all of my improved boilers, the maintenance of a constant supply or head of water at the lowest point of the circulationvz'. e., at the lower ends of the headers. Hence none of the tubes can be cut out by short-circuiting the circulation.

I claim herein as my inventionl. A Water-tube boiler having in combination two connected water-chambers, three connected series of tubes extending from said chambers -across the combustion-chamber, a feed-supply connected to one chamber, and a steam-pipe to the other chamber, substantially as set forth.

2. A water-tube boiler having in combination a series of headers, three connected series of tubes extending from said headers across the combustion-chamber, one or more tubes extending from the upper portion of each header and bafiie-plates or diaphragms extending across each header and into the tube or tubes, substantially as set forth.

3. A water-tube boiler having in combination an equalizing-box connected to the watersupply, a series of headers having the lower ends connected to said box, three connected series of tubes extending from the headers across the combustion-chamber, one or more tubes extending from the upper portion of each header and a baffle-plate or diaphragm extending across each header and into the tube or tubes, substantially as set forth.

In testimony whereof I have hereunto set my hand.

ARCHIE G. HOHENSTEIN. Witnesses:

DARWIN S. VVoLcoTT, J. C. DAVIDSON. 

